Floor-surfacing machine.



No. 87D,982. PATENTED NOV. 12, 1907.

G. S. MATHEWS.

FLOORSURFAOING MACHINE.

APPLICATION FILED MAY 1, 1906.

avwewvo'a George, SIZIOHZH Mathews.

war/newl UNITED STATES. PATENT ()EEIOE.

. GEORGE STEPHEN MkTHEWs, or KANSAS o1TY,;M1ss0UE1, ASSIGNOR F ONE-FOURTE TO HENRY o. MANKE AND ONE-FOURTH TO JOHN F. PELLETIER, OF KANSAS CITY, Mrs- SOURI.

'FLOOR-SUBFACING MACHINE.

Patented Nov. 12, 1907'.

Application filed May 1- 1906. Serial No. 814.717.

To all whom if'may concern:

Be it known that.I, Gnonon STEPHEN MATHEWS, a citizen of the United States, residing at Kansas City, in the county of Jackson'and State of Missouri, have invented certai'n new and useful Improvements in Floor-Surfacing Machines; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in machines especially adapted for grinding and polishing floors in initially surfacing or re-surfacing them.

It has for its object to provide a machine of this character which is simple in construction, comparatively cheap of manufacture and is so designed as to reach all corners, walls and places which are inaccessible to other machines of like nature.

Further objects of the invention will hereinafter become apparent.

The invention consists broadly in pivotallyimounting the shaft for carrying the grinding or polishing members, together with the mechanism for driving said shaft, upon the main body of a truck whereby a grinding or polishing member, when mounted on its shaft, may be swung from side to side so as to cover the entire path of the truck and thus do the work of several members mounted so that they cannot be moved out of one position. The invention also consists in the features of construction and combinations of parts hereinafter described and more particularly pointed out in lhc claims concluding this specification.

In the accompanying drawings illustrating the preferred embodiment of my invention: I'igurc 'l is a plan view of a'rnachiue constructed in accordamze with my invention, and Fig. 2 is aside elevation thereof, partly in central section.

efcrring more particularly to the drawings, 1 is the main platform or body of a ltuck which is formed by mounting said platform on wheels 2. Upon said truqkis pivotall y mounted the supplennmtal platform or table 3 which carries a motor 4 and an arm 5 provided with bearings 6 and 7 for the vertical shaft 8 and a bearing 9 for the motor shaft 10. The pivot lug or pin ll, for the supplemental table, passes through the platform of the truck and has pivotally mounted on its lower portion a swinging arm 12 also having a bearing 13 for the vertical shaft 8. "lb will'he noted that said bearing extends down near to tholloor orsurfzu-o to he worked whereby the grinding member is loss liable to vibrate and will produce a smoother and morc cue-n surface. It is well known that where a true and l-mo oth surface is required it is necessary to support the i vorking or grinding member as near the worked surface as possible. Said vertical shaft is driven by means of beveled pinions or gears 14 and 15 fitted respectively on the motor shaft and said vertical shaft. 0n the lower end of said vertical shaft is mounted a grinding or polishing member or disk 16 which may be adjusted vertically by means 01 a sleeve 17 arranged around said shaft 'and carrying-a hand-wheel 18, said sleeve having screw connection with the upper hearing on the arm 5.

It will be understood that any other form of disk or Wheel for grinding or polishing may be substituted for that shown in the drawing and wherever the term grinding member is used it should be construed to mean any desired form or design of device for either rough grinding or polishing. It will thus be seen that by the use of different grind-members, the machine may be successfully employed to remove any unevenness in new or old wooden floors and with the use of sand and water it may be used to surface and polish marble, stone or mosaic floors as well as other work.

The rear end of the supplemental platform or table 3 is provided with a rack 19 terminating at each endin a projecting stop 20. A gear or pinion 21, pivoted on the main platform of the truck, engages said rack and is operated to swing the table by means of a hand lever 22 or any other suitable device.

While I have not shown in the drawing any mechanical device for automatically propelling the truck,

such means may be employed whereby the truck may be moved at any desired speed according to the work to he done. The machine can be tipped up and put in place by workmen with but very little effort.

ll. will be noted that the grinding or polishing member or disk lli, as shown, is hollow faced, as at 16', whereby said disk, in contact with the grain of the floor surface at the point of action, works in opposite directions and, in connection with the oscillal lag of the frame carrying said wheel, works the grain of the wood in four din-cl ions at one opcralion. lt is not mrcessary to use sand with this form of grinding member as it will cut any surface.

I claim:

I. In a machine of the character described, the comblnw tion. with a truck having a mnln platform, of a supplemental platform or table plvofully mounted on the platl'orm of sold truck, n. shaft, carrying a grinding member. mounted on sold supplemental platform, a pivoted urm urrungcd below the truck platform and also huvlug a bearing for sold shaffextendlng down near to the surface to he worked and means to drive said shaft.

2. In a machine of the character descrlbed, the comblnatlon,.\vlth a truck having a main platform, or a supplemental platform or fable plvofully mounted on the platform of sald truck, the pivot lug for said supplemental platform extending through the main platform, a pivoted arm mounted on sold In}: below sold mnln platform a shaft, carrying a grinding member. mnnniod on said sup plemenial platform and having a lh-arin; in said pivoivd.

arm extending down near m the surfm-o (1) be worked, and means to drive said .x'hiiii.

3. In a machine of tho vhuruvlhr (llNUl'lhiWl, 1110 czunbinw tlon, with u truck having 21 main platform. 01' a snpplemental platiorni or izihle p'ivutnlly inmrnud 01] philform of said truck, a shufi', czirryinz: :i "rindin; monlbur, mounted on mid snpph-nwnml plaiii'orm, 11mins in drivv said shaft and moans in usciilntu said snp h-nwnml plllb form compri ing a gear pivoted on the truck phitfunn and engaging a rack on said supplemental platform.

4. In a. machine of the character descrihod, Lho combination, with a truck having a. main platform, of u supple- 

